利用wincap开发包编写的本地网络数据ICMP数据包捕获程序，可以根据需要修改成TCP和UDP的捕获程序，供初学者参考-Prepared using wincap development of local network data packets ICMP packet capture program, you can modify as needed TCP and UDP Capture program for advanced users

TCP发包，ip发包，ipv6,ipv4,udp等功能(Tcp/ip contracting procedure)